Rekognition custom labels "No predictions for this image" instead of "False Negative"

Hello, if you can open a customer support ticket and provide us with:

1. your account ID
2. your Project Version ARN
3. the TestingDataResult/Input GT manifest
4. the TestingDataResult/Output GT manifest
5. the TestingDataResult/Validation GT manifest

then we can take a closer look at your model and give you more specialized information. Thank you.

Hi CGarces,

Thanks for reaching out for this problem. DetectCustomLabels does not return any labels/predictions with a confidence value that is lower than the MinConfidence value given in DetectCustomLabels API call. If you specify a value of 0, DetectCustomLabels returns all labels, regardless of the assumed threshold applied to each label. If you don't specify a value for MinConfidence, DetectCustomLabels returns labels based on the assumed threshold of each label. The assumed threshold is calculated based on the best F1 score achieved on the test dataset during model training for each label. You are probably not specifying a MinConfidence/threshold value.

Please specify MinConfidence parameter as 0, or a lower value to get some or all of predictions. Please also refer to the following resources for more information:

• https://docs.aws.amazon.com/rekognition/latest/customlabels-dg/im-metrics-use.html
• https://docs.aws.amazon.com/rekognition/latest/APIReference/API_DetectCustomLabels.html#rekognition-DetectCustomLabels-request-MinConfidence

Please let us know if this problem continues for you. Thanks.